Now, we choose the same function as [1]}
\(\omega (\xi )={\left\lbrace \begin{array}{ll}\frac{\xi }{1+4\pi \sqrt{\xi _{0}\xi }},& \text{if}\;0\le \xi \le \xi _{0};\\C_{\xi _{0}}\log \xi ,& \text{if}\;\xi \ge \xi _{0},\end{array}\right.}\) 
